white list java.time.format.DateTimeFormatter parse method

[pgermosen]

Testing done

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This change is similar to instant parse change the reasoning, we have the static fields of DateTimeFormatter that was added in subset of the Java 8 time API, but we cannot use the class, because it is not whitelisted to the instance methods.

java.time package, is a safe API that use immutable classes, so it should be safe to use it.